用高钼白钨精矿制取高纯三氧化钨工艺实践

摘要

This paper presents a process for preparing high purity tungstentrioxide in which Shizhuyuan high molybdenum scheelite concentrates are treated by molybdenum removal and NaHS extraction of tertiary amine, evaporation and crystallization using the autoclave－ soda process. The problems about increasing the recovery ratio of tungsten trioxide and purifying sodium tungstate with additives are also discussed in the paper.%介绍了采用苏打压煮、NaHS除钼、叔胺萃取、蒸发结晶处理柿竹园高钼白钨精矿，生产高纯三氧化钨的工艺。并对加入添加剂以提高三氧化钨回收率、净化钨酸钠溶液等问题进行了探讨。